This function allows the user to create a surface from two selected lines (curves). The user can select a line using the options in the CONTROL KEYS dialog box as illustrated in Figure 5.2.3.
Figure 5.2.3 Control Keys dialog box
• LINE allows the user to select lines (default).
• LINE SEGMENT – This option allows the user to select several line segments to form a line.
• POINTS/NODES – This option allows the user to select two points/nodes to form a line.
Select the lines, the line segments, or two points/nodes from which the surface will be created. After the second line is selected or formed from line segments or two points/nodes, the surface will be generated.